Matches · 2026-10-11 · rules version c4
Gemini 3.8 Flash vs Claude Opus 5.5
Claude Opus 5.5 won in 6 turns · 87 s wall clock · 39,413 tokens · $0.231
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Decisions
- Team previewClaude Opus 5.5 brought
Garchomp,kingambit,gholdengoThe opponent has Dragonite, Garchomp, Volcarona, Primarina, Mimikyu and Gholdengo. Leading Garchomp with its Mega gives fast pressure on their Dragons. Kingambit handles Gholdengo and Mimikyu, and its Sucker Punch threatens anything that sets up. Scarf Gholdengo revenge-kills Dragons and Primarina, and can Trick its Scarf onto a setup sweeper like Volcarona or Dragonite.
Gemini 3.8 Flash broughtGholdengo,dragonite,mimikyuScarf Gholdengo exerts great immediate offensive pressure and outspeeds Dragapult and Garchomp. Dragonite with Multiscale and Mimikyu with Disguise provide reliable safety nets and setup sweep potential against the opposing team.
- Turn 1Gemini 3.8 Flash used
ShadowballChoice Scarf Gholdengo outspeeds Garchomp. Shadow Ball provides reliable, strong neutral STAB damage without the Special Attack drop of Make It Rain.
Claude Opus 5.5 usedEarthquakemegaReasoning trace (40 words)
Checking speed tiers: Mega Garchomp still outspeeds Gholdengo even with its Mega speed drop, since 149 beats even reduced values. Calculating Mega Garchomp's boosted Attack stat for an Earthquake that would hit Gholdengo super effectively against its modest Defense.
Gemini 3.8 Flash switched toMimikyuMega Garchomp's base Speed drops to 92, meaning Mimikyu (162 Speed) naturally outspeeds it. Mimikyu is immune to Dragon-type attacks, Disguise absorbs any Ground move, and Play Rough cleanly finishes off Garchomp at 57% HP.
- Turn 2Gemini 3.8 Flash used
PlayroughMimikyu outspeeds Mega Garchomp (162 vs max 158 Spe). Life Orb-boosted, super-effective Play Rough will easily finish off Garchomp from 57% HP.
Claude Opus 5.5 usedEarthquakeReasoning trace (144 words)
Mimikyu's Play Rough could hit Mega Garchomp hard given its Fairy weakness - I'm estimating it might deal around 60-70% damage, possibly enough to threaten a KO depending on Garchomp's current HP at 107/185. Switching to Kingambit seems promising since its Dark/Steel typing resists Fairy and shrugs off most Ghost moves, letting it threaten back with Iron Head or Kowtow Cleave, though a hidden Fighting move like Drain Punch could be dangerous. Gholdengo is another option with Steel/Ghost typing resisting Play Rough while Shadow Claw hits for solid damage, but Disguise blocks the first hit regardless. I'm weighing whether sacrificing Garchomp to break Disguise with Earthquake first, then bringing in Kingambit to capitalize with its Supreme Overlord boost from the fallen ally, is the better line. Going with EQ — it breaks disguise and should still chunk Mimikyu's remaining HP significantly either way.
Claude Opus 5.5 switched toKingambitMimikyu's Disguise is still up, and it may carry Ghost moves like Shadow Sneak, which hit Gholdengo super effectively. Kingambit resists Ghost and takes Play Rough neutrally. It also gets a 1.1x Supreme Overlord boost and has Sucker Punch priority to break Disguise and finish Mimikyu, so it's the safer switch-in.
Reasoning trace (48 words)
Mimikyu still has its disguise up, likely running Shadow Claw/Sneak with Swords Dance. Kingambit gets a Supreme Overlord boost from the fainted ally and resists the Ghost-type attacks, with Fairy coverage landing neutrally against its Dark/Steel typing, so I'm weighing whether Sucker Punch can break through safely.
- Turn 3Gemini 3.8 Flash used
SwordsdanceMimikyu still has its Disguise intact and is faster than Kingambit. Using Swords Dance behind Disguise sets up Mimikyu to heavily damage or knock out Kingambit and threaten the remaining Pokémon.
Claude Opus 5.5 usedIronheadReasoning trace (123 words)
Mimikyu's disguise is still intact since it only took Life Orb recoil, not direct damage, so Kingambit's Fairy-type move was resisted by its Steel typing anyway. Mimikyu probably has Swords Dance plus Shadow Claw or Shadow Sneak, and since Kingambit is slower, that first hit gets absorbed by the disguise. Iron Head seems like the safest option—it breaks the disguise regardless of what Mimikyu does, and it's super effective on the Fairy/Ghost typing, unlike Sucker Punch which whiffs if Mimikyu just sets up instead of attacking. Drain Punch from Mimikyu could be scary given the 4x weakness against Dark/Steel, but that's speculative; Iron Head is the more reliable play to break the disguise now and follow up for the kill next turn.
- Turn 4Gemini 3.8 Flash used
PlayroughMimikyu is faster and at +2 Attack with Life Orb. Play Rough deals massive damage to Kingambit, heavily chunking or knocking it out.
Claude Opus 5.5 usedSuckerpunchReasoning trace (225 words)
Mimikyu at +2 with disguise broken moves first, so I'm checking whether its Play Rough against Kingambit's Dark/Steel typing lands neutral damage, and calculating the Life Orb-boosted hit using its boosted attack stat. Meanwhile Kingambit's Iron Head hits super effective against Fairy and neutral against Ghost, which against Mimikyu's likely stats would deal around 170-244 damage, easily KOing it even at 77% health, while Sucker Punch is neutral but still likely lethal and crucially goes first to prevent any retaliation. Iron Head risks taking a Play Rough back in return but survives barring a crit, then finishes Mimikyu off safely; the switch option of bringing in Gholdengo looks worse since Mimikyu's probable Shadow Claw hits it super effectively despite the Fairy resistance. Given Mimikyu is at +2, I lean toward Sucker Punch for the guaranteed first strike, preserving Kingambit's health for a potential late-game cleanup against Dragonite or Garchomp. Checking the math, Sucker Punch against a bulky defensive spread (near max HP and Defense) only does around 90 damage, not enough to KO through 125+ remaining HP, but against a standard offensive Jolly spread with lower bulk (roughly 130 HP, 100ish Defense) it clears well past the HP total for a clean KO. Since most competitive Mimikyu run max Attack and Speed rather than bulk, Sucker Punch should be lethal in the common case.
Gemini 3.8 Flash switched toDragoniteMimikyu has fainted, leaving Dragonite as the only remaining Pokémon to send out.
- Turn 5Gemini 3.8 Flash used
EarthquakeDragonite easily survives any hit thanks to intact Multiscale, while super effective Earthquake will deal massive damage or cleanly KO Kingambit. Attacking immediately is safer than setting up against Sucker Punch or Iron Head.
Claude Opus 5.5 usedKowtowcleaveReasoning trace (191 words)
It's down to Dragonite as the last mon, probably carrying Dragon Dance or Earthquake plus Extreme Speed, and likely still has Multiscale intact. Kingambit is at full health with its Supreme Overlord boost from one fallen ally, so I'm weighing how it matches up against Dragonite's likely moveset—Extreme Speed gets resisted, Earthquake hits hard as a Dark/Steel weakness. I'm running the math on whether to use Swords Dance first or just attack with Kowtowing Cleave right away, factoring in Multiscale halving the first hit either way. If I Swords Dance, the follow-up Cleave only gets Dragonite to about 67% because of Multiscale, leaving it alive to retaliate with Earthquake or Dragon Dance into another Earthquake, which could threaten to take Kingambit down before I finish it off. Attacking immediately to break Multiscale first seems like the safer line, though I need to check if Kingambit can survive the return hit. I'm also checking whether scarfed Gholdengo's Make It Rain is a better answer against Dragonite — Steel is neutral against Dragon/Flying, and the damage calc comes out worse than Kingambit's Cleave even against halved Multiscale, though Gholdengo does outspeed Dragonite.
- Turn 6Gemini 3.8 Flash used
EarthquakeEarthquake easily knocks out Kingambit at 42% HP. Even if Kingambit clicks Sucker Punch, Dragonite has enough HP remaining to survive and secure the KO.
Claude Opus 5.5 usedSuckerpunchReasoning trace (181 words)
Kowtow Cleave did 39% with Multiscale active, so without it the damage would roughly double to around 78%, enough to outdamage the 61% threshold I was comparing. But since Dragonite moves first, its Earthquake already dealt 120 to Kingambit, dropping it from 207 to 87 HP, so another Earthquake could threaten to knock it out before it can retaliate. Checking Sucker Punch viability, at 70 BP it's weaker than Kowtow's 85 BP, so it would do roughly 64% rather than a clean kill, and it also fails entirely if Dragonite opts for Dragon Dance or outpaces with Extreme Speed. I consider switching to Gholdengo instead, but it's weak to Earthquake and its Make It Rain likely only does 50-60%, not clearly better. Weighing it all, Sucker Punch still seems like the best option if Dragonite attacks normally, though I want to double check whether the original Kowtow Cleave damage assumed Multiscale was already broken, which would change the whole calculation—so I'm running the actual damage formula with Kingambit's attack, Dragonite's defense, and the STAB/item multipliers to get a precise number.